Mercurial > octave
annotate libinterp/corefcn/stack-frame.h @ 31607:aac27ad79be6 stable
maint: Re-indent code after switch to using namespace macros.
* build-env.h, build-env.in.cc, Cell.h, __betainc__.cc, __eigs__.cc,
__ftp__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __magick_read__.cc,
__pchip_deriv__.cc, amd.cc, base-text-renderer.cc, base-text-renderer.h,
besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.h, call-stack.cc,
call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, dasrt.cc, data.cc,
debug.cc, defaults.cc, defaults.h, det.cc, display.cc, display.h, dlmread.cc,
dynamic-ld.cc, dynamic-ld.h, ellipj.cc, environment.cc, environment.h,
error.cc, error.h, errwarn.h, event-manager.cc, event-manager.h,
event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, fft.cc, fft2.cc,
file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h,
gcd.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h,
graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, gsvd.cc, gtk-manager.cc,
gtk-manager.h, help.cc, help.h, hook-fcn.cc, hook-fcn.h, input.cc, input.h,
interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h,
inv.cc, jsondecode.cc, jsonencode.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
lookup.cc, ls-hdf5.cc, ls-mat4.cc, ls-mat5.cc, lsode.cc, lu.cc, mappers.cc,
matrix_type.cc, max.cc, mex.cc, mexproto.h, mxarray.h, mxtypes.in.h,
oct-errno.in.cc, oct-hdf5-types.cc, oct-hist.cc, oct-hist.h, oct-map.cc,
oct-map.h, oct-opengl.h, oct-prcstrm.h, oct-process.cc, oct-process.h,
oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h,
octave-default-image.h, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc,
pow2.cc, pr-output.cc, psi.cc, qr.cc, quadcc.cc, rand.cc, regexp.cc,
settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xpow.cc,
sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfns.cc, svd.cc,
syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h,
symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h,
text-renderer.cc, text-renderer.h, time.cc, toplev.cc, typecast.cc,
url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h,
variables.cc, variables.h, xdiv.cc, __delaunayn__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audioread.cc, convhulln.cc,
gzip.cc, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc,
cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h,
cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h,
cdef-utils.cc, cdef-utils.h, ov-base-diag.cc, ov-base-int.cc, ov-base-mat.cc,
ov-base-mat.h, ov-base-scalar.cc, ov-base.cc, ov-base.h, ov-bool-mat.cc,
ov-bool-mat.h, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.h, ov-cell.cc,
ov-ch-mat.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h,
ov-complex.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-dld-fcn.cc,
ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-float.cc,
ov-flt-complex.cc, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-diag.cc,
ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-lazy-idx.cc,
ov-legacy-range.cc, ov-magic-int.cc, ov-mex-fcn.cc, ov-mex-fcn.h,
ov-null-mat.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc,
ov-re-mat.h, ov-re-sparse.cc, ov-scalar.cc, ov-str-mat.cc, ov-struct.cc,
ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, ovl.h,
octave.cc, octave.h, op-b-sbm.cc, op-bm-sbm.cc, op-cs-scm.cc, op-fm-fcm.cc,
op-fs-fcm.cc, op-s-scm.cc, op-scm-cs.cc, op-scm-s.cc, op-sm-cs.cc, ops.h,
anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h,
comment-list.cc, comment-list.h, filepos.h, lex.h, oct-lvalue.cc, oct-lvalue.h,
parse.h, profiler.cc, profiler.h, pt-anon-scopes.cc, pt-anon-scopes.h,
pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h,
pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc,
pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc,
pt-cell.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h,
pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h,
pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h,
pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h,
pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.cc, pt-misc.h,
pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h,
pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h,
pt-walk.cc, pt-walk.h, pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h,
idx-vector.cc, idx-vector.h, range-fwd.h, CollocWt.cc, CollocWt.h,
aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h,
gsvd.cc, gsvd.h, hess.cc, hess.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc,
lo-specfun.h, lu.cc, lu.h, oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h,
oct-norm.cc, oct-norm.h, oct-rand.cc, oct-rand.h, oct-spparms.cc,
oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randgamma.cc, randgamma.h,
randmtzig.cc, randmtzig.h, randpoisson.cc, randpoisson.h, schur.cc, schur.h,
sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc,
sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h,
file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h,
lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h,
oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc,
oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h,
action-container.cc, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h,
cmd-hist.cc, cmd-hist.h, f77-fcn.h, file-info.cc, file-info.h,
lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.h,
lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h, oct-base64.cc,
oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h, oct-mutex.cc,
oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sparse.cc,
oct-sparse.h, oct-string.h, octave-preserve-stream-state.h, pathsearch.cc,
pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc,
url-transfer.h:
Re-indent code after switch to using namespace macros.
author | Rik <rik@octave.org> |
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date | Thu, 01 Dec 2022 18:02:15 -0800 |
parents | e88a07dec498 |
children | 597f3ee61a48 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1993-2022 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if ! defined (octave_stack_frame_h) |
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27 #define octave_stack_frame_h 1 |
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28 |
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29 #include "octave-config.h" |
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30 |
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31 #include <deque> |
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32 #include <iosfwd> |
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33 #include <list> |
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34 #include <map> |
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35 #include <memory> |
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36 #include <string> |
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37 |
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38 class octave_value; |
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39 class octave_value_list; |
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40 |
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41 #include "error.h" |
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42 #include "ov-fcn.h" |
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43 #include "ov-usr-fcn.h" |
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44 #include "syminfo.h" |
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45 #include "symscope.h" |
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46 |
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47 // Variable values are stored in the stack_frame objects that make up |
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48 // the call_stack. There are four separate stack_frame objects |
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49 // corresponding to the following language elements: |
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50 // |
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51 // * user-defined functions |
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52 // |
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53 // These are .m files. They have local variables. |
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54 // |
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55 // * scripts |
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56 // |
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57 // These are .m files, but not functions. They access variables, |
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58 // but do not store any values directly. All values are stored in |
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59 // the stack frame corresponding to the scope in which they are |
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60 // executed. |
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61 // |
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62 // * scopes that do not correspond to functions |
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63 // |
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64 // This is primarily used by the top-level scope but the |
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65 // interpreter may also create temporary scopes in which to |
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66 // evaluate functions or scripts. |
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67 // |
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68 // * compiled functions |
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69 // |
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70 // These are built-in functions and dynamically-loaded compiled |
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71 // functions (.mex and .oct files) and do not contain variable |
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72 // values of their own. They are skipped when Octave displays a |
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73 // stack trace. |
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74 // |
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75 // All stack frames also contain the following data: |
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76 // |
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77 // * a reference to the evaluator that contains the frame |
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78 // |
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79 // Global variables are now stored in the evaluator and this link |
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80 // gives us immediate access to them. |
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81 // |
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82 // * line and column in the source file where the stack frame was created |
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83 // |
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84 // These values are used to print stack traces. |
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85 // |
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86 // * A pointer to the nearest parent frame that contains variable |
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87 // info (the "static" link) |
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88 // |
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89 // A frame that contains variable info may be a user-defined |
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90 // function, script, or scope frame. This pointer should never |
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91 // point to a compiled function stack frame. |
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92 // |
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93 // * A pointer to the nearest lexical parent frame (the "access" link) |
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94 // |
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95 // Used to access non-local variables for nested and anonymous |
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96 // functions or as a link to the parent frame in which a script is |
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97 // executed. This pointer should only point to a parent function |
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98 // stack frame. |
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99 |
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100 OCTAVE_BEGIN_NAMESPACE(octave) |
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101 |
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102 class tree_evaluator; |
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103 class symbol_info_list; |
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104 class unwind_protect; |
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105 |
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106 class stack_frame_walker; |
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107 |
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108 class stack_frame |
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109 { |
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110 public: |
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111 |
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112 typedef std::map<std::string, octave_value> local_vars_map; |
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113 |
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114 // Markers indicating the type of a variable. Values for local |
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115 // variables are stored in the stack frame. Values for |
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116 // global variables are stored in the tree_evaluator object that |
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117 // contains the stack frame. Values for persistent variables are |
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118 // stored in the function scope corresponding to the stack frame. |
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119 |
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120 enum scope_flags |
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121 { |
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122 LOCAL, |
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123 GLOBAL, |
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124 PERSISTENT |
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125 }; |
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126 |
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127 // Index into the list of automatic variables for user-defined |
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128 // function stack frames. |
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129 |
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130 enum auto_var_type |
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131 { |
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132 ARG_NAMES, |
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133 IGNORED, |
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134 NARGIN, |
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135 NARGOUT, |
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136 SAVED_WARNING_STATES, |
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137 NUM_AUTO_VARS |
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138 }; |
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139 |
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140 stack_frame (void) = delete; |
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141 |
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142 stack_frame (tree_evaluator& tw, std::size_t index, |
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143 const std::shared_ptr<stack_frame>& parent_link, |
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144 const std::shared_ptr<stack_frame>& static_link, |
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145 const std::shared_ptr<stack_frame>& access_link) |
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146 : m_evaluator (tw), m_is_closure_context (false), |
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147 m_line (-1), m_column (-1), m_index (index), |
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148 m_parent_link (parent_link), m_static_link (static_link), |
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149 m_access_link (access_link), m_dispatch_class () |
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150 { } |
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151 |
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152 // Compiled function. |
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153 static stack_frame * |
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154 create (tree_evaluator& tw, octave_function *fcn, std::size_t index, |
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155 const std::shared_ptr<stack_frame>& parent_link, |
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156 const std::shared_ptr<stack_frame>& static_link); |
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157 |
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158 // Script. |
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159 static stack_frame * |
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160 create (tree_evaluator& tw, octave_user_script *script, std::size_t index, |
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161 const std::shared_ptr<stack_frame>& parent_link, |
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162 const std::shared_ptr<stack_frame>& static_link); |
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163 |
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164 // User-defined function. |
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165 static stack_frame * |
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166 create (tree_evaluator& tw, octave_user_function *fcn, std::size_t index, |
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167 const std::shared_ptr<stack_frame>& parent_link, |
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168 const std::shared_ptr<stack_frame>& static_link, |
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169 const std::shared_ptr<stack_frame>& access_link = std::shared_ptr<stack_frame> ()); |
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170 |
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171 // Anonymous user-defined function with init vars. |
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172 static stack_frame * |
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173 create (tree_evaluator& tw, octave_user_function *fcn, std::size_t index, |
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174 const std::shared_ptr<stack_frame>& parent_link, |
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175 const std::shared_ptr<stack_frame>& static_link, |
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176 const local_vars_map& local_vars, |
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177 const std::shared_ptr<stack_frame>& access_link = std::shared_ptr<stack_frame> ()); |
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178 |
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179 // Scope. |
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180 static stack_frame * |
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181 create (tree_evaluator& tw, const symbol_scope& scope, std::size_t index, |
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182 const std::shared_ptr<stack_frame>& parent_link, |
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183 const std::shared_ptr<stack_frame>& static_link); |
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184 |
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185 stack_frame (const stack_frame& elt) = default; |
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186 |
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187 stack_frame& operator = (const stack_frame& elt) = delete; |
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188 |
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189 virtual ~stack_frame (void) = default; |
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190 |
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191 // FIXME: It would be nice to eliminate these but there are a few |
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192 // places where we still need to know the specific type of the |
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193 // stack frame that we are handling. |
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194 |
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195 virtual bool is_compiled_fcn_frame (void) const { return false; } |
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196 virtual bool is_user_script_frame (void) const { return false; } |
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197 virtual bool is_user_fcn_frame (void) const { return false; } |
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198 virtual bool is_scope_frame (void) const { return false; } |
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199 |
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200 virtual void clear_values (void); |
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201 |
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202 std::size_t index (void) const { return m_index; } |
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203 |
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204 void line (int l) { m_line = l; } |
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205 int line (void) const { return m_line; } |
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206 |
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207 void column (int c) { m_column = c; } |
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208 int column (void) const { return m_column; } |
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209 |
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210 std::string fcn_file_name (void) const |
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211 { |
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212 octave_function *fcn = function (); |
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213 |
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214 return fcn ? fcn->fcn_file_name () : ""; |
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215 } |
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216 |
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217 std::string fcn_name (bool print_subfn = true) const |
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218 { |
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219 std::string retval; |
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220 |
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221 octave_function *fcn = function (); |
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222 |
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223 if (fcn) |
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224 { |
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225 std::string parent_fcn_name = fcn->parent_fcn_name (); |
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226 |
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227 if (print_subfn && ! parent_fcn_name.empty ()) |
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228 retval = parent_fcn_name + '>'; |
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229 |
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230 if (fcn->is_anonymous_function ()) |
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231 retval += "@<anonymous>"; |
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232 else |
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233 retval += fcn->name (); |
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234 } |
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235 else |
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236 retval = "<unknown>"; |
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237 |
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238 return retval; |
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239 } |
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240 |
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241 virtual symbol_scope get_scope (void) const = 0; |
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242 |
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243 virtual octave_function * function (void) const { return nullptr; } |
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244 |
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245 virtual unwind_protect * unwind_protect_frame (void) { return nullptr; } |
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246 |
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247 symbol_info_list |
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248 make_symbol_info_list (const std::list<symbol_record>& symrec_list) const; |
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249 |
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250 octave_value who (const string_vector& patterns, bool have_regexp, |
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251 bool return_list, bool verbose, |
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252 const std::string& whos_line_fmt, |
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253 const std::string& msg); |
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254 |
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255 symbol_info_list all_variables (void); |
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256 |
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257 octave_value workspace (void); |
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258 |
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259 std::list<std::string> variable_names (void) const; |
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260 |
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261 // Look for named symbol visible from current scope. Don't |
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262 // attempt to insert if missing. |
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263 virtual symbol_record lookup_symbol (const std::string&) const = 0; |
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264 |
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265 // Look for named symbol visible from current scope. Attempt to |
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266 // insert if missing. |
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267 virtual symbol_record insert_symbol (const std::string&) = 0; |
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268 |
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269 symbol_info_list glob_symbol_info (const std::string& pattern); |
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270 |
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271 symbol_info_list regexp_symbol_info (const std::string& pattern); |
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272 |
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273 symbol_info_list get_symbol_info (void) |
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274 { |
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275 return all_variables (); |
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276 } |
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277 |
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278 void make_persistent (const symbol_record& sym) |
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279 { |
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280 if (sym.is_formal ()) |
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281 { |
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282 std::string nm = sym.name (); |
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283 error ("can't make function parameter %s persistent", nm.c_str ()); |
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284 } |
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285 |
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286 if (is_global (sym)) |
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287 { |
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288 std::string nm = sym.name (); |
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289 error ("can't make global variable '%s' persistent", nm.c_str ()); |
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290 } |
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291 |
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292 install_variable (sym, octave_value (), false); |
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293 |
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294 mark_persistent (sym); |
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295 } |
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296 |
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297 void make_global (const symbol_record& sym) |
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298 { |
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299 if (is_persistent (sym)) |
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300 { |
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301 std::string nm = sym.name (); |
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302 error ("can't make persistent variable '%s' global", nm.c_str ()); |
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303 } |
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304 |
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305 install_variable (sym, octave_value (), true); |
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306 |
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307 mark_global (sym); |
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308 } |
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309 |
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310 std::shared_ptr<stack_frame> |
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311 parent_link (void) const {return m_parent_link; } |
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312 |
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313 std::shared_ptr<stack_frame> |
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314 static_link (void) const {return m_static_link; } |
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315 |
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316 std::shared_ptr<stack_frame> |
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317 access_link (void) const {return m_access_link; } |
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318 |
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319 virtual std::size_t size (void) const; |
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320 |
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321 virtual void resize (std::size_t); |
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322 |
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323 void mark_global (const symbol_record& sym) |
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324 { |
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325 mark_scope (sym, GLOBAL); |
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326 } |
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327 |
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328 void unmark_global (const symbol_record& sym) |
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329 { |
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330 mark_scope (sym, LOCAL); |
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331 } |
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332 |
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333 void mark_persistent (const symbol_record& sym) |
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334 { |
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335 mark_scope (sym, PERSISTENT); |
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336 } |
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337 |
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338 void unmark_persistent (const symbol_record& sym) |
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339 { |
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340 mark_scope (sym, LOCAL); |
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341 } |
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342 |
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343 bool is_defined (const symbol_record& sym) const |
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344 { |
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345 octave_value val = varval (sym); |
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346 |
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347 return val.is_defined (); |
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348 } |
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349 |
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350 bool is_variable (const symbol_record& sym) const |
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351 { |
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352 octave_value val = varval (sym); |
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353 |
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354 return val.is_defined (); |
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355 } |
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356 |
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357 bool is_variable (const std::string& name) const |
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358 { |
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359 symbol_record sym = lookup_symbol (name); |
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360 |
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361 return sym ? is_variable (sym) : false; |
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362 } |
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363 |
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364 bool is_local_variable (const std::string& name) const |
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365 { |
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366 symbol_record sym = lookup_symbol (name); |
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367 |
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368 return sym ? (is_variable (sym) && ! is_global (sym)) : false; |
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369 } |
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370 |
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371 bool is_object (const symbol_record& sym) const |
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372 { |
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373 octave_value val = varval (sym); |
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374 |
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375 return val.isobject (); |
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376 } |
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377 |
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378 bool is_object (const std::string& name) const |
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379 { |
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380 symbol_record sym = lookup_symbol (name); |
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381 |
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382 return sym ? is_object (sym) : false; |
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383 } |
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384 |
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385 virtual scope_flags scope_flag (const symbol_record&) const = 0; |
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386 |
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387 virtual scope_flags get_scope_flag (std::size_t) const; |
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388 |
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389 virtual void set_scope_flag (std::size_t, scope_flags); |
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390 |
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391 bool is_global (const symbol_record& sym) const |
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392 { |
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393 return scope_flag (sym) == GLOBAL; |
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394 } |
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395 |
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396 bool is_global (const std::string& name) const |
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397 { |
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398 symbol_record sym = lookup_symbol (name); |
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399 |
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400 return sym ? is_global (sym) : false; |
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401 } |
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402 |
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403 bool is_persistent (const symbol_record& sym) const |
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404 { |
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405 return scope_flag (sym) == PERSISTENT; |
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406 } |
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407 |
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408 bool is_persistent (const std::string& name) const |
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409 { |
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410 symbol_record sym = lookup_symbol (name); |
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411 |
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412 return sym ? is_persistent (sym) : false; |
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413 } |
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414 |
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415 void install_variable (const symbol_record& sym, |
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416 const octave_value& value, bool global); |
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417 |
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418 void install_variable (const std::string& name, |
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419 const octave_value& value, bool global) |
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420 { |
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421 symbol_record sym = insert_symbol (name); |
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422 |
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423 install_variable (sym, value, global); |
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424 } |
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425 |
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426 virtual octave_value get_auto_fcn_var (auto_var_type) const = 0; |
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427 |
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428 virtual void set_auto_fcn_var (auto_var_type, const octave_value&) = 0; |
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429 |
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430 virtual octave_value varval (const symbol_record& sym) const = 0;; |
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431 |
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432 virtual octave_value varval (std::size_t data_offset) const; |
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433 |
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434 octave_value varval (const std::string& name) const |
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435 { |
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436 symbol_record sym = lookup_symbol (name); |
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437 |
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438 return sym ? varval (sym) : octave_value (); |
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439 } |
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440 |
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441 virtual octave_value& varref (const symbol_record& sym) = 0; |
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442 |
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443 virtual octave_value& varref (std::size_t data_offset); |
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444 |
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445 void assign (const symbol_record& sym, const octave_value& val) |
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446 { |
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447 octave_value& lhs = varref (sym); |
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448 |
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449 if (lhs.get_count () == 1) |
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450 lhs.call_object_destructor (); |
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451 |
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452 // Regularize a null matrix if stored into a variable. |
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453 lhs = val.storable_value (); |
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454 } |
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455 |
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456 void assign (const std::string& name, const octave_value& val) |
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457 { |
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458 symbol_record sym = insert_symbol (name); |
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459 |
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460 assign (sym, val); |
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461 } |
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462 |
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463 void assign (octave_value::assign_op op, const symbol_record& sym, |
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464 const std::string& type, |
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465 const std::list<octave_value_list>& idx, |
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466 const octave_value& rhs) |
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467 { |
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468 if (idx.empty ()) |
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469 { |
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470 if (op == octave_value::op_asn_eq) |
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471 assign (sym, rhs); |
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472 else |
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473 varref (sym).assign (op, rhs); |
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474 } |
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475 else |
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476 varref (sym).assign (op, type, idx, rhs); |
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477 } |
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478 |
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479 void non_const_unary_op (octave_value::unary_op op, |
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480 const symbol_record& sym, |
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481 const std::string& type, |
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482 const std::list<octave_value_list>& idx) |
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483 { |
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484 if (idx.empty ()) |
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485 varref (sym).non_const_unary_op (op); |
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486 else |
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487 varref (sym).non_const_unary_op (op, type, idx); |
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488 } |
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489 |
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490 octave_value value (const symbol_record& sym, const std::string& type, |
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491 const std::list<octave_value_list>& idx) const |
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492 { |
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493 octave_value retval = varval (sym); |
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494 |
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495 if (! idx.empty ()) |
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496 { |
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497 if (retval.is_constant ()) |
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498 retval = retval.subsref (type, idx); |
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499 else |
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500 { |
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501 octave_value_list t = retval.subsref (type, idx, 1); |
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502 |
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503 retval = t.length () > 0 ? t(0) : octave_value (); |
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504 } |
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505 } |
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506 |
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507 return retval; |
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508 } |
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509 |
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510 octave_value find_subfunction (const std::string& name) const |
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511 { |
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512 symbol_scope scope = get_scope (); |
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513 |
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514 return scope.find_subfunction (name); |
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515 } |
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516 |
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517 void clear (const symbol_record& sym) |
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518 { |
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519 if (is_global (sym)) |
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520 unmark_global (sym); |
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521 |
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522 assign (sym, octave_value ()); |
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523 |
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524 if (is_persistent (sym)) |
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525 unmark_persistent (sym); |
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526 } |
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527 |
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528 void clear_objects (void); |
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|
529 |
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530 void clear_variable (const std::string& name); |
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531 |
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532 void clear_variable_pattern (const std::string& pattern); |
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533 void clear_variable_pattern (const string_vector& patterns); |
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534 |
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535 void clear_variable_regexp (const std::string& pattern); |
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536 void clear_variable_regexp (const string_vector& patterns); |
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|
537 |
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538 void clear_variables (void); |
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539 |
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540 std::string get_dispatch_class (void) const { return m_dispatch_class; } |
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|
541 |
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542 void set_dispatch_class (const std::string& class_name) |
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543 { |
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544 m_dispatch_class = class_name; |
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545 } |
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allow dispatch class to be stored in stack frame (bug #45351)
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546 |
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547 void display_stopped_in_message (std::ostream& os) const; |
27037
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make dbup/dbdown work again (bug #56020)
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548 |
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549 virtual void mark_scope (const symbol_record&, scope_flags) = 0; |
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550 |
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551 virtual void display (bool follow = true) const; |
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552 |
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553 virtual void accept (stack_frame_walker& sfw) = 0; |
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554 |
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555 virtual void break_closure_cycles (const std::shared_ptr<stack_frame>&) { } |
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avoid memory leaks when returning handles to nested functions
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556 |
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557 void mark_closure_context (void) { m_is_closure_context = true; } |
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558 bool is_closure_context (void) const { return m_is_closure_context; } |
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559 |
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560 protected: |
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561 |
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562 // Reference to the call stack that contains this frame. Global |
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563 // variables are stored in the call stack. This link gives us |
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564 // immediate access to them. |
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565 tree_evaluator& m_evaluator; |
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566 |
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567 // TRUE if this stack frame is saved with a handle to a nested |
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568 // function (closure). |
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569 bool m_is_closure_context; |
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570 |
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571 // The line and column of the source file where this stack frame |
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572 // was created. Used to print stack traces. |
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573 int m_line; |
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574 int m_column; |
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575 |
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576 // Index in call stack. |
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577 std::size_t m_index; |
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578 |
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579 // Pointer to the nearest parent frame. May include compiled |
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580 // functions. |
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581 std::shared_ptr<stack_frame> m_parent_link; |
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582 |
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583 // Pointer to the nearest parent frame that contains variable |
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584 // information (script, function, or scope). This link skips over |
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585 // compiled function parent frames. |
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586 std::shared_ptr<stack_frame> m_static_link; |
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587 |
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588 // Pointer to the nearest lexical parent frame. Used to access |
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589 // non-local variables for nested and anonymous functions or as a |
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590 // link to the parent frame in which a script is executed. |
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591 std::shared_ptr<stack_frame> m_access_link; |
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592 |
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593 // Allow function handles to temporarily store their dispatch class |
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594 // in the call stack. |
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595 std::string m_dispatch_class; |
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596 }; |
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597 |
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598 OCTAVE_END_NAMESPACE(octave) |
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599 |
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600 #endif |